CN116333631A - 封装hjt电池用封装胶膜及其制备方法、制得的光伏组件 - Google Patents
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Abstract
本发明公开封装HJT电池用封装胶膜及其制备方法、制得的光伏组件，包括以下质量份原料：POE树脂40‑50份、EVA树脂60‑80份、双季戊四醇六丙烯酸酯1‑2份、乙烯基紫外线吸收剂1‑2份、过氧化物交联剂1‑3份、抗氧化剂0.1‑0.5份。本发明利用在过氧化物交联剂的引发作用下，首次将4‑甲基丙烯酰氧基二苯甲酮与POE树脂、EVA树脂、双季戊四醇六丙烯酸酯发生交联共聚，进而将紫外线吸收剂接枝到树脂分子长链上，实现分子内抗老化抗紫外线，能明显提高紫外线吸收剂在胶膜体系中的结合稳定性，避免紫外线吸收剂发生迁移、抽出的问题，实现持久抗紫外线、抗老化、耐黄变的作用。
Description
技术领域
本发明属于封装胶膜材料领域，具体涉及封装HJT电池用封装胶膜及其制备方法、制得的光伏组件。
背景技术
异质结晶硅太阳电池(HJT Silicon Solar Cell)属于新型高效太阳电池之一，目前大尺寸HJT电池最高效率已经超过25％。异质结晶硅太阳电池具有制备流程简单、无高温烧结、转换效率高、温度系数低、无光衰等特点，一直是光伏发电领域的研究热点之一。随着HJT电池行业的发展，用于其封装的封装胶膜材料也变得炙手可热，但是由于光伏组件长期暴露在室外环境中工作，其封装胶膜在光热作用下易于老化，进而影响HJT电池的光电效率。因此，如何制备一种稳定持久抗紫外老化的封装胶膜是亟待解决的技术问题。
发明内容
针对现有技术的不足之处，本发明的目的在于提供封装HJT电池用封装胶膜及其制备方法、制得的光伏组件。
本发明的技术方案概述如下：
封装HJT电池用封装胶膜，包括以下质量份原料：
优选的是，所述的封装HJT电池用封装胶膜，包括以下质量份原料：
优选的是，所述的封装HJT电池用封装胶膜，包括以下质量份原料：
优选的是，所述的封装HJT电池用封装胶膜，包括以下质量份原料：
优选的是，所述乙烯基紫外线吸收剂为4-甲基丙烯酰氧基二苯甲酮，其化学结构式如下：
优选的是，所述过氧化物交联剂包括叔丁基过氧化2-乙基己基碳酸酯、1,1-二(叔丁基过氧)环己烷、过氧化二异丙苯、正丁基-4,4-二(叔丁基过氧化)戊酸酯、叔丁基过氧基甲酸-2-乙基己基酯和二(4-甲基苯甲酰)过氧化物中的一种或多种。
优选的是，所述抗氧化剂包括二丁基羟基甲苯、叔丁基对苯二酚、邻羟基苯甲酸苯酯、2,4-二羟基二苯甲酮、2-(2-羟基-5-甲基苯基)苯并三氮唑中的一种或多种。
本发明还提供所述的封装HJT电池用封装胶膜的制备方法：将POE树脂、EVA树脂混合均匀后，再加入双季戊四醇六丙烯酸酯、乙烯基紫外线吸收剂、过氧化物交联剂，于80-90℃搅拌反应0.5-1h，再加入抗氧化剂，再于110-130℃挤出、流延成膜、牵引、收卷后，得所述封装HJT电池用封装胶膜。
本发明还提供光伏组件，包括所述的封装HJT电池用封装胶膜。
优选的是，所述光伏组件还包括HJT电池片和玻璃，所述封装胶膜夹合于HJT电池片和玻璃之间的位置。
本发明的有益效果：
1、本发明利用在过氧化物交联剂的引发作用下，首次将4-甲基丙烯酰氧基二苯甲酮与POE树脂、EVA树脂、双季戊四醇六丙烯酸酯发生交联共聚，进而将紫外线吸收剂接枝到树脂分子长链上，实现分子内抗老化抗紫外线，能明显提高紫外线吸收剂在胶膜体系中的结合稳定性，避免紫外线吸收剂发生迁移、抽出的问题，实现持久抗紫外线、抗老化、耐黄变的作用。
2、本发明光伏组件使用寿命长，抗衰减性能优异、光电转化效率高。
附图说明
图1为封装HJT电池用封装胶膜制备方法流程图。
具体实施方式
下面结合实施例对本发明做进一步的详细说明，以令本领域技术人员参照说明书文字能够据以实施。
实施例1
封装HJT电池用封装胶膜，包括以下质量份原料：
封装HJT电池用封装胶膜的制备方法：将POE树脂、EVA树脂混合均匀后，再加入双季戊四醇六丙烯酸酯、4-甲基丙烯酰氧基二苯甲酮、叔丁基过氧化2-乙基己基碳酸酯，于80℃搅拌反应0.5h，再加入叔丁基对苯二酚，再于110℃挤出、流延成膜、牵引、收卷后，得所述封装HJT电池用封装胶膜。
实施例2
封装HJT电池用封装胶膜，包括以下质量份原料：
封装HJT电池用封装胶膜的制备方法：将POE树脂、EVA树脂混合均匀后，再加入双季戊四醇六丙烯酸酯、4-甲基丙烯酰氧基二苯甲酮、过氧化二异丙苯，于85℃搅拌反应1h，再加入邻羟基苯甲酸苯酯，再于120℃挤出、流延成膜、牵引、收卷后，得所述封装HJT电池用封装胶膜。
实施例3
封装HJT电池用封装胶膜，包括以下质量份原料：
封装HJT电池用封装胶膜的制备方法：将POE树脂、EVA树脂混合均匀后，再加入双季戊四醇六丙烯酸酯、4-甲基丙烯酰氧基二苯甲酮、正丁基-4,4-二(叔丁基过氧化)戊酸酯，于90℃搅拌反应1h，再加入2-(2-羟基-5-甲基苯基)苯并三氮唑，再于130℃挤出、流延成膜、牵引、收卷后，得所述封装HJT电池用封装胶膜。
实施例4
光伏组件包括封装胶膜、HJT电池片和玻璃，所述封装胶膜夹合于HJT电池片和玻璃之间的位置。
按照国家标准GB/T29848-2013《光伏组件封装用乙烯-醋酸乙烯酯共聚物(EVA)胶膜》测定实施例1-3制出的封装胶膜的透光率、剥离强度、收缩率、紫外加速老化后的黄变指数。试验结果如下表所示：
| 透光率/％ | 剥离强度/N/cm | 收缩率/％ | 黄变指数 | |
| 实施例1 | 91.5 | 106 | 1.1 | 1.0 |
| 实施例2 | 91.2 | 113 | 0.9 | 0.8 |
| 实施例3 | 91.1 | 116 | 1.2 | 0.7 |
由上表可知，实施例1-3制出的封装胶膜的透光率≥91.1％、剥离强度≥106N/cm、收缩率≤1.2、紫外加速老化后的黄变指数≤1.0，证明实施例1-3制出的封装胶膜具有优良的综合性能。
实施例1-3利用在过氧化物交联剂的引发作用下，首次将4-甲基丙烯酰氧基二苯甲酮与POE树脂、EVA树脂、双季戊四醇六丙烯酸酯发生交联共聚，进而将紫外线吸收剂接枝到树脂分子长链上，实现分子内抗老化抗紫外线，能明显提高紫外线吸收剂在胶膜体系中的结合稳定性，避免紫外线吸收剂发生迁移、抽出的问题，实现持久抗紫外线、抗老化、耐黄变的作用。
实施例4光伏组件使用寿命长，抗衰减性能优异、光电转化效率高。
尽管本发明的实施方案已公开如上，但其并不仅仅限于说明书和实施方式中所列运用，它完全可以被适用于各种适合本发明的领域，对于熟悉本领域的人员而言，可容易地实现另外的修改，因此在不背离权利要求及等同范围所限定的一般概念下，本发明并不限于特定的细节。
Claims (10)
1.封装HJT电池用封装胶膜，其特征在于，包括以下质量份原料：
2.根据权利要求1所述的封装HJT电池用封装胶膜，其特征在于，包括以下质量份原料：
3.根据权利要求1所述的封装HJT电池用封装胶膜，其特征在于，包括以下质量份原料：
4.根据权利要求1所述的封装HJT电池用封装胶膜，其特征在于，包括以下质量份原料：
5.根据权利要求1-4任一项所述的封装HJT电池用封装胶膜，其特征在于，所述乙烯基紫外线吸收剂为4-甲基丙烯酰氧基二苯甲酮，其化学结构式如下：
6.根据权利要求1-4任一项所述的封装HJT电池用封装胶膜，其特征在于，所述过氧化物交联剂包括叔丁基过氧化2-乙基己基碳酸酯、1,1-二(叔丁基过氧)环己烷、过氧化二异丙苯、正丁基-4,4-二(叔丁基过氧化)戊酸酯、叔丁基过氧基甲酸-2-乙基己基酯和二(4-甲基苯甲酰)过氧化物中的一种或多种。
7.根据权利要求1-4任一项所述的封装HJT电池用封装胶膜，其特征在于，所述抗氧化剂包括二丁基羟基甲苯、叔丁基对苯二酚、邻羟基苯甲酸苯酯、2,4-二羟基二苯甲酮、2-(2-羟基-5-甲基苯基)苯并三氮唑中的一种或多种。
8.根据权利要求1-4任一项所述的封装HJT电池用封装胶膜的制备方法，其特征在于：将POE树脂、EVA树脂混合均匀后，再加入双季戊四醇六丙烯酸酯、乙烯基紫外线吸收剂、过氧化物交联剂，于80-90℃搅拌反应0.5-1h，再加入抗氧化剂，再于110-130℃挤出、流延成膜、牵引、收卷后，得所述封装HJT电池用封装胶膜。
9.光伏组件，其特征在于，包括权利要求1-4任一项所述的封装HJT电池用封装胶膜。
10.根据权利要求9所述的光伏组件，其特征在于，所述光伏组件还包括HJT电池片和玻璃，所述封装胶膜夹合于HJT电池片和玻璃之间的位置。
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